Cables To Go Model 26478 24 USB Serial Adapter Type: USB to DB9 (RS-232) Color: Translucent Connector Number: 3 Connector Detail: 1 x 4-pin Type A Male USB 2 x 9-pin DB-9 Male RS-232 Serial Specifications: Data Transfer Rate:230 Kbps System Requirements: PC running Windows 98SE/ME/2000 XP Pentium processor 200MHz or above or equivalent CD-Rom Drive Available USB Port (either from the system or through a USB hub) Compatibility: PDAs, digital cameras, modems, and ISDN terminal adapters