The SONY RC-S320 is a contactless IC card reader/writer that connects via USB. I thought I had lost the same one I was using and bought a new one on Amazon. However, I found the original one at home a few days later, so I am listing the new one for sale. Thank you! - Model: RC-S320 - Brand: SONY - Function: Contactless IC card reader/writer - Power: DC 5V, Max 100mA - Connection: USB - Country of Manufacture: Japan Thank you for looking.