Bittree B422-FI6T/24 RS422 2RU 2x24 Full Normal Patchbay with 6 Wire Circuit & Programmable Normals. Ships preconfigured with your preferred Normalling configuration; can be easily reprogrammed via shunts under the top dust cover. Robust six-wire circuits accommodate RS-422 signals and provide two extra circuits for additional applications or protocols. Handles bi-directional signals such as SMPTE 207M, RS-422, RS-424, RS-232 and other general purpose interface applications. Rated to 30,000 minimum insertion cycles. Copper-nickel-silver alloy leaf springs with gold-alloy cross bar switching contacts and nickel-plated sleeve bushings. 3/16" (0.187 in. / 4.76 mm) machined aluminum with a durable powder-coat finish. Precision machined phenolic insulator electrically and mechanically separates jacks from the front panel.