The Velocity T-Series Module 4 is an interface option, designed for use in the Velocitykvm T-Series 4200 modular chassis (T-4200 sold separately). This module supports one single-link DVI display, PS2, full duplex stereo audio, stereo emitter, and serial (RS-232). Depending on your requirements, module model options feature either USB 1.0 HID and USB 2.0 or USB 1.0 HID (only). Using multi-mode or single mode fiber, it allows users to locate a DVI monitor and peripherals via fiber from just a few meters up to 40 kilometers (24 miles) away from the controlling computer securely and without the loss of resolution.