Compatible with the following: IBM eServer xSeries 150 (8658-3xx) IBM eServer xSeries 220 (8646-xxx) IBM eServer xSeries 230 (8656-xxx) IBM eServer xSeries 330 (8674-xxx) IBM eServer xSeries 340 (8656-xxx) IBM IntelliStation R Pro 6851-xxx IBM Netfinity 3500 M20 (8657-2xx,3xx,4xx) IBM Netfinity 4500R (8656-1xx,2xx,3xx) IBM Netfinity 4500R (8656-4xx,5xx) IBM Netfinity 5100 (8658-1xx,2xx) IBM Netfinity 5100 (8658-3xx,4xx) IBM Netfinity 5100 (8658-5xx)