ASAP Purchasing is a leading supplier of Tandem obsolete computer hardware parts and networking components. We specialize in providing immediate quotes for Tandem part number 25-5000, Tandy Model 4000 Personal Computer .. Our sales team is dedicated to fulfilling your order requirements for Tandem 25-5000 and will contact you shortly with a response after receiving your quote request. We are available 24/7 to assist with all your parts requirements, including targeted pricing and order-fulfillment date.