Check the listing for details. Keysight 16555A-426 Option 426 for 16555A whichs allows 5-module configuration,. Condition: Used. Listed at 29.95 USD. Agilent HP Keysight 16555A-426 Option 426 for 16555A which allows 5-module HP/Agilent 16555A-426 Option Retrofit KitAll our parts are guaranteed original (unless otherwise noted), working, and in good shape on arrival. *We are happy to combine shipping when purchasing multiple items. If buying more then one item, please wait for invoice for proper shipping charge. Local Pick Up Available IL Tax applies to IL residents. CA Tax applies to CA residents MD Tax applies to MD residents------------------------------------------------------------------------------------- All Items are subject to prior sale. International Orders must pay through a verified PayPal account. ... Shipping Note: Please allow 1 to 2 business days after payment for shipment. We do not ship or process orders on weekends. Please contact us if you have any questions. We are here to answer questions Monday through Friday 8am - 5pm CST.MMN Powered by eBay Blackthorne 04.08.021 HP/Agilent 16555A-426 Option Retrofit Kit All our parts are guaranteed original (unless otherwise noted), working, and in good shape on arrival. *We are happy to combine shipping when purchasing multiple items. If buying more then one item, please wait for invoice for proper shipping charge. Local Pick Up Available ------------------------------------------------------------------------------------- All Items are subject to prior sale. International Orders must pay through a verified PayPal account. ... Shipping Note: Please allow 1 to 2 business days after payment for shipment. We do not ship or process orders on weekends. Please contact us if you have any questions. We are here to answer questions Monday through Friday 8am - 5pm CST. MMN Orders over $500 will require signature upon delivery to comply with eBay's Authorized Signature Requirement - Contact us for details.