Stonewall carries a full line of industry standard RS-232, RS-422/RS-449, RS-530, V.35 and X.21 Straight-thru and Null Modem/Cross-over configurations. We offer a variety of styles and, as usual, our cables are available in custom length. Every cable is fully shielded. If you're not sure which serial cable you need, please call or e-mail for assistance. Our knowledgeable sales staff will step you through the selection process.