VSTAR UA80 800VA UPS | Compact Power Backup | 230V Output | Battery Included | For PCs, Routers, POS & More | Universal Outlet Design | Available in Black | Model UPS-U80 Reliable 800VA Power CapacityThe VSTAR UA80 delivers dependable 800VA of backup power—ideal for protecting home or office equipment from sudden power loss and voltage fluctuations. Compact & Efficient DesignSleek and space-saving, this unit fits easily into tight workspaces or under desks without sacrificing performance. Universal Output SocketEquipped with universal-style outlets, allowing compatibility with a wide variety of plugs and devices including PCs, routers, POS systems, and more. Steady 230V OutputProvides consistent 230V output, helping to keep electronics safe during sags, surges, and outages. Easy OperationPlug-and-play functionality with intuitive indicators for power status and battery mode—no complicated setup required. Backup Battery IncludedShips ready to use with internal battery installed. Offers enough runtime to safely power down or continue short-term tasks during outages. Ideal for Light LoadsPerfect for use with routers, modems, home surveillance systems, basic desktops, and point-of-sale devices. Durable Plastic EnclosureBuilt with sturdy, insulated plastic to ensure safety, lightweight portability, and long-term durability. Trusted VSTAR QualityBacked by VSTAR’s reputation for reliability in affordable UPS power protection.
Logic Board 2.2GHz i7 Integrated Graphics, 16GB Replacement for Apple MacBook Pro 15" Retina A1398 (Mid 2015) Logic Board 2.2GHz i7 Integrated Graphics, 16GB Replacement for Apple MacBook Pro 15″ Retina A1398 (Mid 2015)
BATTERY DELL 6MT4T CYDZ 62W 7.6V Laptop Battery Compatible with Dell Latitude 5470 E5470 155570 E5570 3510 M3510 7V69Y, TXF9M, 79VRK, 07V69Y, 0HK6DV, 079VRK, 0TXF9M About this item 6MT4T Voltage: 7.6V, Capacity: 62Wh Compatible Part Number: 7V69Y, TXF9M, 79VRK, 07V69Y, 0HK6DV, 079VRK, 0TXF9M Compatible for Dell Latitude 14 Series 5470 E5470 155570 E5570 Series Compatible for Dell Latitude 15 Series Precision 15 3510 M3510.
Premium non-slip rubber feet designed to fit MacBook Pro models A1398, A1425, and A1502—restoring grip, stability, and base protection with a perfect OEM-style fit. Keep your MacBook Pro firmly in place with these high-quality skid-proof rubber feet, precision-made for MacBook Pro 13″ and 15″ Retina models: A1398 (15″ Retina, 2012–2015) A1425 (13″ Retina, 2012–2013) A1502 (13″ Retina, 2014–2015) These replacement feet replicate Apple’s original design, offering excellent traction on smooth surfaces like glass, wood, or metal desks—preventing slips during typing or transport. Crafted from soft yet durable silicone-rubber, they also cushion your laptop’s base, reducing scratches and minimizing vibration noise. Each set includes all necessary feet (typically 5 per unit) with strong pre-applied adhesive for quick, secure installation. The matte black finish matches your MacBook Pro’s sleek bottom case for a seamless look. Perfect for replacing worn, missing, or damaged feet due to age, cleaning, or accidental removal. A simple, cost-effective way to restore both function and finish to your MacBook Pro. Installation Tip: Clean the foot areas thoroughly with isopropyl alcohol and let dry before applying. Lightly warming the adhesive (with a hairdryer or fingers) can improve bonding.
Genuine-spec keyboard replacement for MacBook Air 13″ (Model A2179, 2020, Intel) — choose US QWERTY or UK QWERTY (with £ symbol). Features Apple’s reliable scissor-switch mechanism, backlighting, and OEM-fit design for seamless performance and aesthetics. Compatible With: MacBook Air 13-inch (2020, Model A2179, EMC 3597) with Intel Core i3/i5/i7 processors (non-M1). Layout Options (select at purchase): US Layout: Standard QWERTY with wide Enter key, @ above 2, # above 3, and full inverted-T arrow keys. UK Layout: QWERTY with £ symbol, tall vertical Enter key, @ accessed via right Alt, and UK-specific punctuation—matches Apple’s official UK regional configuration. US Layout: Standard QWERTY with wide Enter key, @ above 2, # above 3, and full inverted-T arrow keys. UK Layout: QWERTY with £ symbol, tall vertical Enter key, @ accessed via right Alt, and UK-specific punctuation—matches Apple’s official UK regional configuration. Keyboard Type: Traditional scissor-switch mechanism (not Butterfly, not Magic Keyboard)—robust, tactile, and serviceable, with good key travel and proven durability. Integrated Features: Full backlit keys for low-light use Ambient light sensor compatibility OEM-style ribbon cable pre-attached for direct logic board connection Full backlit keys for low-light use Ambient light sensor compatibility OEM-style ribbon cable pre-attached for direct logic board connection Precision Build: Molded to exact Apple specifications—ensures flush mounting, consistent key alignment, and seamless integration into the original top case. Installation Note: Keyboard is screw-mounted with light adhesive—more accessible than glued Butterfly/Magic keyboards. Requires top case access and battery disconnect. Suitable for intermediate DIYers or professional technicians. Important: This is keyboard only—does not include the top case, battery, trackpad, or logic board. Not compatible with M1 MacBook Air (A2337/A2338) or M2 models (A2681/A2941). This is keyboard only—does not include the top case, battery, trackpad, or logic board. Not compatible with M1 MacBook Air (A2337/A2338) or M2 models (A2681/A2941). Model Verification: Confirm your device is MacBook Air A2179 (13″, Intel, 2020) via > About This Mac > Model Identifier (e.g., MacBookAir9,1).
A1707 Battery Replacement, A1820 Battery for MacBook Pro 15″ (Late 2016, Mid 2017) Touch Bar EMC 3072 EMC 3162 MLH32 MLH42 MLW72 MLW82 MPTR2 MPTT2 MLH52 MLW92 MPTU2 MPTV2 MPTW2 MPTX2 Specification】Voltage: 11.4V. Capacity: 76Wh 6667mAh. Battery Type: Li-ion. Condition: Brand new, from high quality materials, top circuit boards and smart chip. 【Compatible Part Number】A1820, A1707, A1707(EMC 3072), A1707(EMC 3162), 020-01728, MacBookPro13,3 , MacBookPro14,3. 【Compatible Laptop Models】MacBook Pro 15-Inch (Late 2016) & (Mid 2017) Model A1707 with touch bar, fit for MLH32LL/A MLH42LL/A MLH52LL/A MLW92LL/A MPTU2LL/A MPTV2LL/A MPTR2LL/A MPTT2LL/A MPTW2LL/A MPTX2LL/A MLW72LL/A MLW82LL/A. 【Note】The tools are included. Double-sided tape is attached to the back of the battery or double-sided tape is included in the package. But No battery installation instruction. The MBP battery is difficult to disassemble, we suggest you search for related installation videos on the Internet or find a technician for help.
TP-Link AC1200 Archer C50 Wireless Dual Band Router Support smooth 4K streaming with AC1200 Wi-Fi 4 external antennas provide stable wireless connections and optimal coverage Easy network management at your fingertips with TP-Link Tether Supports IGMP Proxy/Snooping, Bridge, and Tag VLAN to optimize IPTV streaming Supports Access Point mode to create a new Wi-Fi access point TP-Link AC1200 Archer C50 Wireless Dual Band Router Support smooth 4K streaming with AC1200 Wi-Fi 4 external antennas provide stable wireless connections and optimal coverage Easy network management at your fingertips with TP-Link Tether Supports IGMP Proxy/Snooping, Bridge, and Tag VLAN to optimize IPTV streaming Supports Access Point mode to create a new Wi-Fi access point TP-Link Archer C50 – AC1200 Wireless Dual Band Router Wireless Speed: Up to 1200 Mbps (300 Mbps on 2.4GHz + 867 Mbps on 5GHz) Wi-Fi Standard: 802.11ac – 3x faster than wireless N speeds Bands: Dual Band (2.4GHz & 5GHz) for reduced interference and better performance Antenna: 4 External Antennas for strong and stable wireless coverage Ports: 4× LAN, 1× WAN (10/100 Mbps) Advanced Features: Parental Controls, Guest Network, IPv6 Support, Access Control Security: WPA/WPA2 encryption for secure wireless connections Ease of Use: Easy setup with TP-Link Tether App Ideal For: HD streaming, online gaming, and high-speed downloads in homes and small offices
Genuine-spec touchpad flex cable compatible with both MacBook Air A2179 (Intel, 2020) and A2337 (M1, 2020)—restores full Force Touch functionality, haptic feedback, and precise multi-touch gesture control during trackpad repair or replacement. Compatible With: MacBook Air 13″ (2020, Intel) – Model A2179 (Model Identifier: MacBookAir9,1) MacBook Air 13″ (2020, Apple M1) – Model A2337 (Model Identifier: MacBookAir10,1) MacBook Air 13″ (2020, Intel) – Model A2179 (Model Identifier: MacBookAir9,1) MacBook Air 13″ (2020, Apple M1) – Model A2337 (Model Identifier: MacBookAir10,1) ✅ Important Note: Despite different processors (Intel vs. M1), Apple used the same trackpad assembly and flex cable in both A2179 and A2337. This makes the flex cable fully interchangeable between the two models. Part Type: Touchpad flex cable only — does not include the trackpad housing, Taptic Engine, or mounting hardware. This is the OEM-style ribbon cable that connects the trackpad to the logic board. Function: Transmits: Touch input coordinates Force Touch pressure data Haptic feedback signals to the Taptic Engine Enables full macOS gesture support: Force Click, three-finger lookup, swipe navigation, pinch-to-zoom, and smooth cursor tracking. Touch input coordinates Force Touch pressure data Haptic feedback signals to the Taptic Engine Enables full macOS gesture support: Force Click, three-finger lookup, swipe navigation, pinch-to-zoom, and smooth cursor tracking. OEM-Quality Build: Matches Apple’s original specifications in: Cable length and routing path Connector pitch and ZIF latch design EMI shielding and flex durability Cable length and routing path Connector pitch and ZIF latch design EMI shielding and flex durability Common Use Cases: Replacing a torn, creased, or liquid-damaged original flex cable Completing a trackpad replacement when the original cable is compromised Fixing intermittent trackpad behavior, loss of Force Touch, or complete unresponsiveness Replacing a torn, creased, or liquid-damaged original flex cable Completing a trackpad replacement when the original cable is compromised Fixing intermittent trackpad behavior, loss of Force Touch, or complete unresponsiveness Installation Note: Requires full bottom case removal and battery disconnection. Cable routes under the right side of the battery and logic board. Connects via a ZIF (Zero Insertion Force) socket—align carefully and latch gently. Recommended for experienced or certified technicians only. Requires full bottom case removal and battery disconnection. Cable routes under the right side of the battery and logic board. Connects via a ZIF (Zero Insertion Force) socket—align carefully and latch gently. Recommended for experienced or certified technicians only.
Professional Grade K9 Dual Wireless Lavalier Mic For Android Smartphones Type C K9 Wireless Collar Microphone For YouTube Voice Recording Live Videos Vlog ASMR Podcast & Interview Expert Features 【Wireless Lavalier Microphone (2 Pcs) 】: Ideal for USB-C, iPhone, Smartphones, iPads and Macs with USB-C ports, Android devices, and laptops with USportsPort | Auto Noise Reduction. 【Dual Microphone Set】:Includes two wireless Lavalier microphones for versatile audio recording options. Simply plug the microphone into the USB port for instant connectivity and ease of use. 【Wide Compatibility】:Ideal for use with USB-C devices, iPhones, smartphones, iPads, Macs, Android devices, and laptops with USB-C ports, ensuring compatibility across various platforms. 【Auto Noise Reduction】: Features built-in noise reduction technology to minimize background noise and ensure clear and crisp audio. 【Long Battery Life】:Powered by lithium-ion batteries, providing reliable performance for extended recording sessions. 【Versatile Applications】:Suitable for a wide range of applications, including vlogging, interviews, presentations, podcasting, and more.
BATTERY DELL J60J5 7.6V 55Wh Battery Compatible with Dell Latitude E7470 E7270 7470 7270 451-BBSY 451-BBSX 451-BBSU WYWJ2 R1V85 MC34Y 242WD PDNM2 1W2Y2 GG4FM F1KTM NJJ2H 5F08V P61G001 P26S001 J6OJ5 Laptop Battery About this item SPECIFICATION : Model Name: Standard Rechargeable Li-ion battery Type J60J5 ; Device Type: Notebook battery; Battery Type: Lithium ion; Voltage : 7.6V; Capacity : 55Wh; Cells: 4-cell; Dimensions about 9.37×4.17×0.24in; Weight: About 11OZ / 0.69lb; Condition : 100 % New; Packages includes: 1PC J6OJ5 laptop battery(with free screwdrivers for easy installation) COMPATIBILITY : 7.6V 55 WHr 4-Cell Lithium-Ion battery replace manufacturer part J60J5 J6OJ5 451-BBSX 451-BBSY 451-BBSU R1V85 WYWJ2 MC34Y 0MC34Y 242WD PDNM2 1W2Y2 0F1KTM F1KTM NJJ2H GG4FM 5F08V P61G P61G001 P26S P26S001 battery designed for Dell Latitude E7270 Latitude E7470 7270 7470 Series laptop. SECURITY: ECHEER 55Wh 4-cell J60J5 batteries have passed strict intelligent detection, such as short circuit protection, over-voltage protection, discharge protection, and over-current protection, which is very important for the battery’s use cycle and safety. Also, CE, FCC, and RoHS are certificated. Every one of our replacement notebook batteries is tested to meet OEM specifications.
Genuine-quality keyboard and touchpad connection board (also known as the keyboard flex cable or I/O board) for the 2022 MacBook Pro 14″ (Model A2681)—essential for restoring full keyboard and Touch ID functionality during repairs. Compatible With: MacBook Pro 14-inch (2022, M2 Pro/M2 Max models, Apple Model A2681). Function: This internal connection board links the keyboard, Touch ID sensor, and touchpad to the logic board—critical for proper operation of input devices. Includes: Keyboard flex cable assembly with integrated Touch ID sensor and touchpad connector (exact configuration matches Apple’s original design). Common Use Cases: Replacing after liquid damage, physical impact, or keyboard/touchpad failure; often required when the built-in keyboard or power button (with Touch ID) stops responding. OEM-Spec Quality: Built to match Apple’s original specifications for fit, signal integrity, and durability—ensures seamless integration and reliable performance. Installation Note: Requires precision disassembly of the MacBook’s lower case and display. Recommended for experienced technicians or certified repair centers.
The NCTS HDMI 2.0 cable (3 meters) delivers high-speed and reliable audio/video transmission with support for 4K UHD resolution. Perfect for TVs, monitors, gaming consoles, and home theater systems, it provides a stable connection and clear visuals for everyday and entertainment use. The NCTS HDMI 2.0 Cable 3M is a dependable solution for connecting devices such as laptops, PCs, gaming consoles, and media players to TVs, monitors, and projectors. Supporting 4K UHD video, this cable ensures sharp image quality and smooth performance for movies, gaming, and presentations. Its 3-meter length offers flexible setup options, making it ideal for home, office, and entertainment environments. HDMI 2.0 Standard for high-quality video and audio Supports 4K UHD Resolution for sharp and detailed visuals High-Speed Performance for smooth playback and stable signal 3M Length perfect for flexible positioning and setups Compatible with TVs, Monitors, and Projectors Ideal for PS4 / Xbox / TV Boxes / PCs Durable Build Quality designed for long-term use Plug & Play no setup required Works with all HDMI-enabled devices, including TVs, monitors, projectors, PlayStation, Xbox, laptops, PCs, receivers, and streaming devices. Ideal for users who need a longer cable for home theater setups, gaming stations, or office installations.
Genuine-spec US layout keyboard replacement for MacBook Pro 15″ (2018–2019, Models A1989/A1990)—designed for reliable typing, full compatibility, and seamless integration with original top case assemblies. Compatible With: MacBook Pro 15-inch (2018 A1989 and 2019 A1990 models) with Touch Bar. Layout: Standard US English (QWERTY) with full-size keys, including inverted-T arrow keys and dedicated function row. Integrated Features: Includes built-in backlighting, scissor-switch mechanism (3rd-gen Butterfly or revised Butterfly mechanism, depending on original model year), and ribbon cable connector matching Apple’s OEM design. Functionality: Supports all native keyboard features, including brightness, volume, media controls, and Touch ID power button (note: Touch ID sensor is not included—this is the keyboard only). Build Quality: Precision-engineered to match Apple’s original fit, feel, and durability—ideal for professional repairs or top case refurbishment. Installation Note: Requires full top case disassembly. Keyboard is adhered to the top case and must be carefully removed and replaced using proper tools and techniques. Recommended for experienced technicians. Model Verification: Ensure your MacBook is A1989 (2018) or A1990 (2019) before purchase—keycaps and connectors differ from other MacBook generations.
TT03XL Laptop Battery Compatible with Hp EliteBook 850 G5 850 G6 ZBook 15U G5 15U G6 Series Notebook 932824-2C1 933322-855 932824-421 HSTNN-LB8H HSTNN-DB8K 11.55V 56Wh 4610mAh About this item 【Battery type】Li-ion. Voltage: 11.55V. Capacity: 56Wh 4610mAh. 【Replacement For Laptop】Hp EliteBook 850 G5 G6, ZBook 15U G5 G6 Series . 【Compatible Part Number】TT03XL 932824-2C1 933322-855 932824-421 HSTNN-LB8H HSTNN-DB8K TTO3XL. 【Connector】Before placing your order, Please refer to the picture and check it. Because the products produced by different factories will have differences in size, cable length, interface, etc. 【Use Skills】If the new battery is not recognized during the initial installation, please reinstall and check if the interface is fully connected. Discharge the new battery to 5% (not 0%), then charge and cycle 3-4 times to wake up the new battery.
WiWU Ora Laptop Sleeve Size: 14" and 16" Color: Black/Grey/Ivory Extra Storage Space - Two pockets in front, enough space to keep mouse, cable, cellphone, memory cards, external hard drive, pens, etc. Ultra-slim & Lightweight - Slim, portable, and lightweight to take alone, or slide into your briefcase, backpack, or any other bag, perfect for business, school, or travel. Shockproof - Multiple Layers Protection, polyester foam padding layer, and nylon fabric lining for bump and shock absorption, protect your computer from accidental scratches. Excellent Detail: Use an Exquisite zipper and reinforced stitching on all stress points, ensuring the bag does not fall apart when carrying heavy goods. The first verticle-designed laptop bag, you will feel the beauty of simple and good texture. WiWU Ora Laptop Sleeve Size: 14″ and 16″ Color: Black/Grey/Ivory Extra Storage Space – Two pockets in front, enough space to keep mouse, cable, cellphone, memory cards, external hard drive, pens, etc. Ultra-slim & Lightweight – Slim, portable, and lightweight to take alone, or slide into your briefcase, backpack, or any other bag, perfect for business, school, or travel. Shockproof – Multiple Layers Protection, polyester foam padding layer, and nylon fabric lining for bump and shock absorption, protect your computer from accidental scratches. Excellent Detail: Use an Exquisite zipper and reinforced stitching on all stress points, ensuring the bag does not fall apart when carrying heavy goods. The first verticle-designed laptop bag, you will feel the beauty of simple and good texture.
WiWU T22 Earbuds – Stylish TWS earbuds with TFT display case, Bluetooth 6.0, ANC (-23 dB), 4 hrs playback, and in-ear detection.Sleek, feature-rich, and comfortable — ideal for mobile users who want touch control and immersive sound. Model: WiWU T22 Display & Controls: Charging case includes vibrant TFT/LCD screen with touch controls for playback, ANC toggle, and battery levels Bluetooth: JL 7003D8 chipset, Bluetooth 6.0 (alias V6 or 5.4) for stable, low-latency connection up to 10 m Noise Reduction: Active Noise Cancellation at –23 dB Battery: Earbuds: 30 mAh each; Charging case: 300 mAh; ~4 hrs music, ~3 hrs talk (at ~80% volume); ~50 hrs standby Charging: USB‑C, ~1 hr to full charge Other Features: In-ear detection (auto play/pause), Hi-Fi audio, ergonomic fit, compact design
Reliability meets value in this pre-owned ThinkPad E14 Gen 2. Equipped with the AMD Ryzen 5 4500U 6-core processor, 8GB RAM, and a 512GB NVMe SSD, this laptop is built for students and professionals who need a durable, high-performance machine for everyday multitasking.
0G74G Laptop Battery Replacement for Dell Latitude 5300 2-in-1 5310 7300 7400 Series Notebook OG74G 02PFPW 2PFPW 3KF82 8JYHH 11.4V 42Wh 3-Cell About this item Specification: Battery type: Li-ion. Color: Black. Voltage: 11.4V. Capacity: 42Wh/3Cell. New from Manufacturer Replace Part Number: For MXV9V 0G74G 00G74G 2PFPW 3KF82 8JYHH Compatible Models: Replacement for Dell Latitude 5300 E5300 / 5300 2-in-1 / 5310 E5310 / 5310 2-in-1 / 7300 E7300 / 7400 E7400 Series (Important Note: NOT fit for latitude 7400 2-in-1 Series) Note: The Dell laptop models on this product page are compatible with 2 battery models: 0G74G (42Wh 3-Cell 11.4V) , MXV9V(60Wh 4-Cell 7.6V). Please open the back cover of your laptop to check the original battery size and capacity before placing an order. Make sure that the battery model you need is 0G74G (42Wh 3-Cell 11.4V). Note: If the new battery is not recognized during the initial installation, please reinstall and check if the interface is fully connected. Discharge the new battery to 10-20% (not 0%), then charge and cycle 3-4 times to wake up the new battery
The Genius KM-100SE is a reliable wired keyboard and mouse combo featuring a full-size 104-key layout and USB plug-and-play connection. Ideal for office, business, and everyday home use, it delivers comfortable typing and smooth mouse control with stable performance. The Genius KM-100SE Keyboard & Mouse Combo is a practical and durable solution for users who need dependable performance for daily work. The full-size keyboard offers a comfortable typing experience with a standard layout that’s perfect for productivity, while the wired optical mouse ensures smooth and accurate cursor control. With USB plug-and-play setup, it works instantly with laptops and desktop PCs—no drivers needed. Full-Size 104-Key Keyboard for efficient and comfortable typing Wired USB Connection for stable, lag-free performance Plug & Play Setup – no software or drivers required Comfortable Key Spacing ideal for long office sessions Wired Optical Mouse Included for smooth and accurate tracking Durable Design suitable for daily professional use Ideal for Office & Home – work, study, and general computing Perfect for business offices, schools, home users, and laptop/desktop setups needing a simple, reliable wired keyboard and mouse set. Compatible with most computers supporting USB.
Genuine-spec touchpad flex cable for MacBook Pro 13″ (Model A2251, 2020, Intel)—essential for restoring full Force Touch functionality, haptic feedback, and precise multi-touch gesture control during trackpad repair or replacement. Compatible With: MacBook Pro 13-inch (2020, Two Thunderbolt Ports, Model A2251, Model Identifier MacBookPro16,1) with Intel Core i5/i7 processors. Part Type: Touchpad flex cable only—does not include the trackpad housing, Taptic Engine, or mounting hardware. This is the OEM-style ribbon cable that connects the trackpad to the logic board. Function: Transmits: Precise touch coordinates Force Touch pressure data Haptic feedback signals to the Taptic Engine Enables full macOS gesture support including Force Click, three-finger lookup, swipe navigation, and inertial scrolling. Precise touch coordinates Force Touch pressure data Haptic feedback signals to the Taptic Engine Enables full macOS gesture support including Force Click, three-finger lookup, swipe navigation, and inertial scrolling. OEM-Quality Build: Matches Apple’s original specifications in: Cable length and routing Connector pitch and ZIF latch design EMI shielding and flex durability Cable length and routing Connector pitch and ZIF latch design EMI shielding and flex durability Common Use Cases: Replacing a torn, creased, or liquid-damaged original flex Completing a trackpad replacement when the original cable is compromised Fixing intermittent trackpad behavior, loss of Force Touch, or complete unresponsiveness Replacing a torn, creased, or liquid-damaged original flex Completing a trackpad replacement when the original cable is compromised Fixing intermittent trackpad behavior, loss of Force Touch, or complete unresponsiveness Installation Note: Requires full bottom case removal and partial disassembly (including battery disconnect). Cable routes under the right speaker and logic board—must be seated in original retention channels. Connects via ZIF (Zero Insertion Force) socket—align carefully and latch gently. Recommended for experienced or certified technicians only. Requires full bottom case removal and partial disassembly (including battery disconnect). Cable routes under the right speaker and logic board—must be seated in original retention channels. Connects via ZIF (Zero Insertion Force) socket—align carefully and latch gently. Recommended for experienced or certified technicians only.
