Tascam US-2x2

Has been used for a few years in an indoor studio where it was kept covered, protected and usually powered up to avoid thermal wear. Works as it should. No cosmetic defects or anything like that. 
Technical details: 

• Combines great audio quality and ergonomic design for a powerful 2-in/2-out USB 2 Audio interface
• Two of TASCAM’s Ultra-HDDA mic/line preamps provide up to 57dB of gain with nearly inaudible noise and distortion specs
• The audio design features high-performance, musical components like NE5532 op amps for rich sound quality without coloring the source
• Includes class-compliant drivers for plug-and-play operation on Mac OSX and iOS devices, and a simple driver adds ASIO compatibility for Windows
• MIDI in and out are also included for connecting synths, drum machines, and controllers
• Includes two DAW applications to choose from–-both Cakewalk SONAR X3 LE and Abelton Live Lite 9
• Features XLR and TRS inputs that accept balanced mic and line level signals, with a high-impedance option for recording electric guitar and bass

See manufacturer's description for more technical details on Tascam's website