 Upgrade Path, The
 - Product line includes name brand computer components, custom-assembled personal computers, notebooks, and high-end, scalable workstations and servers.- U.S. Computer Exchange
- New and refurbished computer products and peripherals - buy, sell, trade, lease.
- U.S. Micro Corporation
- Refurbishes pre-owned computers and related peripherals for resale.
- Uk-websitesdirectory.co.uk
- Selected directory of computer retailers.
- Ultima PC
- Ultimate Computer Concepts, Inc
- Ultimate Shopping Center
- Lists software and hardware merchants.
- Ultimate Source International
- Sales and service of used PC's, printers and mainframes. Full line of PC parts.
- Ultinet Computer Corporation@
- Ultra Data Supplies Warehouse
- Underground Computers
- Unetix Pty. Ltd.
- Networking equipment suppliers and consultants.
- Uni-Comp Equipment Corporation
- Specializes in new and used NCR computer equipment, including refurbished mainframe systems, System 3000 equipment, and banking equipment.
- Unicomp Laboratories Inc.
- Computer wholesalers.
- Unicorn Electronics
- Offers computer hardware and supplies, electronic components, test equipment, tools, and more.
- Unifive Co., Ltd.
- Manufacturer of switching AC/DC adaptors and switching power supplies.
- UniLink Inc.
- Specializes in both new and refurbished Unisys computer equipment.
- Union Computer Exchange
- Buys and re-markets Sequent, Pyramid, Sequoia, Auspex, Netframe, and Tricord hardware.
- Unitec Systems, Inc.
- Specializes in hardware upgrades.
- Unitech Computer Services
- United P.C., Inc.
- Custom computers and laptops.
- Universal Systems, Inc
- Unlimited Laptops
- Provides notebook computer sales and service specializing in Sony Vaio, IBM, HP, Fujitsu, Panasonic, and Acer.
- Up Front Multimedia
- Discount seller of Multimedia CD-ROM hardware, software, and accessories serving the world at mostly unbeatable prices.
- Upgrade Source
- Featuring lots of components to upgrade existing PCs or build one from scratch.
- Upgrade Specialists
- UpgradeMaster.com
- Offers a wide range of laptop components and peripherals including batteries, AC adapters, hard drives, optical drives, docking stations, and port replicators for Dell, Toshiba, Gateway, IBM, and other major laptop brands.
- Upgrconn Distribution
- Offer both networked and stand-alone systems.
- Urban Computer Distribution
- Offers new and used MACs and PCs.
- Urban Computing, Inc.
- Sells, installs, repairs, and provides training for PCs, software, and supplies.
- URS Information Systems, Inc.
- Offers computers, printers, monitors, networking, accessories, and parts and supplies.
- US Devices, Inc.
- Services include web design and review, network integration, and application development.
- USA Systems
- Offers customized computer systems as well as brand name and OEM computer parts and peripherals.
- USAnotebook.com
- Sells surplus, used, and refurbished laptop computers.
- USB Phone World
- Online source for laptop batteries and accessories, USB cordless phones, and Skype phones and accessories.
- USBPort.com
- Offers USB cables, parallel adapters and converters, serial adapters, and more.
- Used Computer Center
- Computer systems and accessories bought, sold and traded.
- Used Computer Mall
- Free classifieds and indexed list of dealers who buy and sell all types and brands of used computer equipment.
- Used Laptop Source
- Sells used and refurbished notebook computers.
- Used Laptops Online
- Offers a selection of used laptops, notebooks, and accessories.
- Used PC Warehouse
- Offers refurbished computers and hardware, including desktops, laptops, monitors, printers, and keyboards.
- UsedCisco.com
- Network hardware outlet which offers used and refurbished Cisco equipment, including switches, routers, access servers, and more.
- USEDHW Computer Market
- Buys and sells used hardware.
- UsedLaptops.com
- Sells a variety of used name brand laptops and notebook computers.
- UsedPcHub.com
- Sells used computers and notebooks including printers, palmtop, and other peripherals.
- UsedTechnology
- Buys and sells pre-owned computers and peripherals.
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