Used Microsoft Wireless Optical Desktop Receiver 1.0A (Model X09-37655). This unit connects compatible Microsoft wireless keyboards and mice to your computer via USB or PS/2 ports. Model: Wireless Optical Desktop Receiver 1.0A P/N: X09-37655 Connection: USB + PS/2 (keyboard and mouse) Power: 5V 100mA Compatible with older Microsoft wireless keyboard/mouse sets Ideal for collectors, retro PC setups, or those replacing a missing receiver for an original Microsoft Wireless Optical Desktop set.
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