The HP JetDirect Connectivity Card lets you connect and share any supported HP printer with an EIO slot through the cards USB, serial and/or LocalTalk ports. Thats in addition to your printers existing parallel port. Hewlett-Packard JetDirect connectivity card is designed for connecting USB, Serial and LocalTalk computers to HP EIO printers in non-network environments. It features one serial port, one USB port and one LocalTalk port.