Mac Pro, ATI Radeon HD 5770 GPU Board, 1 GB, For Apple Mac Pro, tested on versions 4.1 and 5.1 computers Contact For the fastest response, please email us through the eBay message system if you have questions about an item or shipping. We check and respond to messages hourly during normal business hours. Sales Policy We are a surplus company and acquire our merchandise from a variety of sources. All information we possess on this item is included in its description, and we are unable to provide further technical assistance. Unless otherwise noted our return policy is 14 days. Buyer is responsible for return shipping. No manufacturers warranty applies, and we do not offer a warranty beyond our 14 day return policy. All items included in the sale are listed or pictured. No accessories or other parts are included if they are not listed or pictured. We only accept Paypal for payment. All items listed on eBay must be purchased through eBay. eBay items are not available to store walk-in customers without the item first being purchased on eBay. Errors and Shortages While we aim to achieve 100% accuracy, mistakes do happen. If there is an error, please contact us by email within 24 hours of receipt and we will correct the issue. Shipping Policy We strive to ship out all orders within 48 hours of payment. We will contact you if there is a delay or other issue. All items are well packed and are shipped by USPS, UPS, or Freight for larger items. ATTENTION INTERNATIONAL CUSTOMERS The following applies to items that are available for purchase by customers that are located outside the USA. We have no control over the delivery of your package once it leaves the USA. There can be delays with customs and with delivery by the postal service in your country. You are responsible for all customs fees and any other fees due once the item is in your country. We list the purchase price and the country of origin for the item on the customs form. We will not declare a lower value or a COO different than where the item was manufactured. Sales Tax We collect California sales tax on all orders shipped within California. If you are a resale customer and are located in California contact us prior to bidding as we must have a valid resale certificate on file BEFORE you bid. We are unable to credit sales tax for purchases completed before we have a certificate on file. Buyers located outside of California are responsible for sales and use tax due in their state.