Single-ended Differential Socketed Probe Head and Accessories, 12GHz The Agilent (now Keysight) E2678A is a InfiniiMax Differential Socket Probe Head and can be used to measure either differential or single-ended signals via a plug-on socket connection. InfiniiMax single-ended/differential socketed probe head and accessories. Includes 48 full bandwidth damping resistors, 6 damped wire accessories, 4 square pin sockets and socket heatshrink. Bandwidth: 12 GHz Connectivity: Low loading, different input capacitance < = 270 fF 4" lead length for reaching into tight spaces such as DIMM socket Order E2671A for replacement accessories Order E2678-61601 to get a E2678A probe head combined with a header adapter