NetAlly's TEST-ACC-5PK five (5) Tester Accessory iPerf for use with AirCheck G2, LinkRunner G2. They can act as an independent iPerf server. Simplify the process of validating network performance with the Test Accessory pocket-sized iPerf server. It eliminates the hassle of configuring an iPerf server making it easier to measure network throughput, even when you have limited access to the infrastructure. The Test Accessory helps simplify the process of measuring throughput by providing a plug-and-play solution that allows you to quickly validate performance on any part of the network. The Test Accessory can be powered via PoE or with AA batteries.