LThee ThinkPad A31 sports ATI's Mobility Radeon 7500 video chip set with 16MB of dedicated RAM, as well as a 15-inch screen with a resolution of 1400 by 1050. The A-series ThinkPads are nothing if not flexible: Either of the A31's modular bays can hold the DVD-ROM combination drive you get at this price--or an extra-cost second battery, second hard drive, LS-120 SuperDisk drive, or Zip 250 drive. The extra-flexible right bay also can accommodate a numeric keypad or a pop-out syncing cradle for IBM's WorkPad, a Palm OS-based PDA.Thee ThinkPad A31 sports ATI's Mobility Radeon 7500 video chip set with 16MB of dedicated RAM, as well as a 15-inch screen with a resolution of 1400 by 1050. The A-series ThinkPads are nothing if not flexible: Either of the A31's modular bays can hold the DVD-ROM combination drive you get at this price--or an extra-cost second battery, second hard drive, LS-120 SuperDisk drive, or Zip 250 drive. The extra-flexible right bay also can accommodate a numeric keypad or a pop-out syncing cradle for IBM's WorkPad, a Palm OS-based PDA.Thee ThinkPad A31 sports ATI's Mobility Radeon 7500 video chip set with 16MB of dedicated RAM, as well as a 15-inch screen with a resolution of 1400 by 1050. The A-series ThinkPads are nothing if not flexible: Either of the A31's modular bays can hold the DVD-ROM combination drive you get at this price--or an extra-cost second battery, second hard drive, LS-120 SuperDisk drive, or Zip 250 drive. The extra-flexible right bay also can accommodate a numeric keypad or a pop-out syncing cradle for IBM's WorkPad, a Palm OS-based PDA.