The Triplett TVR1G was designed to test LAN devices and cabling to the 10, 100 and 1000 Base-T standard. The main unit performs the bulk of the tests such as determining the LAN device type (is it a hub/switch or PC?), the LAN speed and duplex (10, 100, 1000, 1000 MB/s, half or full duplex) and whether PoE (Power over Ethernet) is present without the need for a Remote Probe. The Remote Probe adds the ability to trace cable locations (by audibly tracing tones cables with all four pairs to ensure compatibility with all types of Base-T LANs. The TVR1G helps users locate faulty hubs, PCs or cable connections that are stopping or limiting the performance of the network. Users can even go inline between two LAN devices and determine the final negotiated speed and duplex of the link. The TVR1G is designed for both the LAN installer and repair person - it is useful documenting legacy LANs, installing and repairing LANs, or adding equipment to existing LANs.