Dell Part # 320-2881 - 1000base-sx - 3.3v (Volts) - 1.25 Gbps Data Transfer Rate - Lc Connector - Small Form-factor Pluggable (Sfp) - Short Wavelength - Multi-mode Fiber (Mmf) - Up to 500 Meter Distance for Select Dell Powerconnect Switch Series 2808 2816 2824 2848 3524 3548 3524p 3548p 5524 5548 5524p 5548p 6224 6248 6224f 6224p 6248p 7024 7048 7024f 7024p 7048p 7048r 8132 8132f 8164 8164f