Rare - Note Vintage 5.25" IDE NOT 3.5". 4GB 5.25" IDE 40PIN Vintage Quantum Bigfoot TX04A891 286119-001 tested AS IS. We have had several requests to list the Bigfoot series so now they are listed. These are fully tested before shipping but Sorry to offer them only AS IS Parts or Not Working no returns or credits due to the large amount of Hobbyists and Non Technical people buying these old computer parts lately and returning because they do not know how to properly install and initialize them or ordered the wrong part and we were losing money overall on these old parts due to the high cost of 2 way shipping on warranty returns. No local Pickup. ASK QUESTIONS BEFORE BUYING as NOTHING CAN BE CHANGED once purchased and paid for. No documentation, cables, software or technical support is included unless otherwise stated. No Local Pickups Allowed. Picture is our stock picture and in most cases you will NOT receive the actual part shown.