Welcome to the store! 1. Data transmission is up to 115200bps. And such an expansion card is compatible with the IEEE 1284 standard parallel port. 2. Supports SPP / Byte / ECP mode, riser card works to provide 2 sets of RS 232 9-pin modules. 3. RS-232 Pin 1 / Pin 9 can be set to supply voltage. And such an adapter card supports exquisite craftsmanship, lightweight and practical. 4. The converter card installation is simple, which does not require particularly complicated operations. 5. Expansion cards can be connected to credit card machines / invoice printers / barcode scanners, etc. Item Type: Expansion Card Data Transmission: Up to 115200bps Data Bit: 5, 6, 7, 8 Parity: None, Even, Odd, Space, Mark Stop Bit: 1, 2 Connectable: Credit card machine / invoice printer / barcode scanner etc. Parallel Port: Compatible: IEEE 1284 standard parallel port Support: SPP / Byte / ECP mode 1 x Expansion Card 1 x Bracket 1 x Flat Cable