This an Enhaced Port Replicator for a Toshiba Libretto 100CT or 110CT. These rarely become available for sale. It provides many extra I/O ports including two PS/2 ports to connect an external mouse and an external keyboard. It also provides two extra 32 bit CardBus PCMCIA slots. This is doubling the slots available on a 100CT or 110CT Libretto. One of the slots houses double height cards. There is also a USB 1.0 port. This port replicator is in excellent condition.
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