Description Get more port combinations - and data-transfer rates exceeding 500, 000 cps - with BLACK BOX Peripheral Sharers! For additional devices, choose a Peripheral Sharer with more ports. BLACK BOX Peripheral Sharers support printers, tape drives, CD-ROMs, and other parallel devices. Use tape backup? The Peripheral Sharers feature exclusivity of ports for the rigors of daily tape backup operation. For added versatility, all models support IEEE-1284 Nibble, Byte, ECP, and EPP bi-directional modes. They even support HP Bi-Tronics bi-directional printer interface.