Special Features:

48-port 100base- (sfp optional); mix and match 100base-x sfp optics on the same line card; an alternative to the cisco catalyst 4500 fixed 100base-x line cards(ws-x4148-fx-mt, ws-x4124-fx-mt, ws-x4148-fe-lx-mt and ws-x4148-fe-bd-lc); sfp optics supported in cisco ios software release 12.2(25) sg include: 100base-fx, 100base-lx10, 100gase-bx-d, and 100base-bx-u; ieee 802.3, ieee 802.3ah, ieee 802.3x flow control; enterprise and commercial: fiber-to-the-desktop applications; metro ethernet: for service providers running point-to-point fast ethernet to the home or business

Properties:

A self-contained item which permits the transfer of information between various types of computer support equipment and computers which would not otherwise be compatible. Excludes modem, communication; expander card, computer, automatic data processing; circuit card assembly; and cable assembly (as modified).