Actual part number is: 324815-001 spare# on adapter is 325112-001.
Works on:

Compaq Presario 2175EA 2100AP, 2100CA, 2100CA, 2100LA, 2100US, 2100US, 2100US CTO AMD, 2100US CTO INT, 2101AP, 2101US, 2101US, 2102AP, 2102EA, 2102US, 2102US, 2103AP, 2103EA, 2104AP, 2105AP, 2105CA, 2105CA, 2105EA, 2105LA, 2105US, 2105US, 2106AP, 2106EA, 2106US, 2106US, 2107AP, 2107EA, 2108EA, 2109EA, 2110AP, 2110CA, 2110CA, 2110EA, 2110LA, 2110US, 2110US, 2111AP, 2111EA, 2112AP, 2112EA, 2113AP, 2114AP, 2114EA, 2115AP, 2115EA, 2116AP, 2117AP, 2117EA, 2118AD, 2118EA, 2118EA, 2119AD, 2119EA, 2120AD, 2120AP, 2120EA, 2120LA, 2120US, 2122AD, 2123AD, 2123AP, 2124AD, 2124AP, 2125AC, 2125AD, 2125AP, 2125EA, 2126AC, 2126AD, 2126EA, 2127AC, 2127AD, 2127EA, 2127EA, 2128AC, 2128AD, 2128EA, 2129AD, 2129EA, 2130AC, 2130AD, 2130AP, 2130EA, 2131AC, 2131AD, 2131EA, 2132AC, 2132RS, 2132RS, 2133AC, 2133AD, 2133AP, 2133EA, 2134AD, 2134EA, 2135AC, 2135AD, 2135AP, 2135CA, 2135EA, 2135US, 2135US, 2136AC, 2136AD, 2136EA, 2136RSH, 2136RSH, 2137AC, 2137AD, 2137EA, 2138AC, 2138AD, 2138EA, 2139AC, 2139AD, 2140AC, 2140AD, 2140AP, 2140CA, 2140US, 2140US, 2141AC, 2141AC, 2141AD, 2141EA, 2142EA, 2143AD, 2143AP, 2144AD, 2144EA, 2145AD, 2145AP, 2145CA, 2145EA, 2145US, 2145US, 2146AD, 2146EA, 2147AD, 2147EA, 2148AD, 2148EA, 2149AD, 2149EA, 2150AP, 2150US, 2150US, 2151AD, 2151EA, 2152EA, 2153AP, 2154AP, 2154EA, 2155AP, 2155EA, 2155US, 2155US, 2156AP, 2156EA, 2157AP, 2158AP, 2158EA, 2160EA, 2160US, 2161EA, 2162EA, 2163EA, 2164EA, 2165EA, 2166EA, 2167EA, 2169EA, 2170US, 2172EA, 2173EA, 2175EA Compaq Presario notebook PC 2575US DC944AV, DA733AV, DA734AV, DC606A, DC607A, DC720A, DC721A, DC755A, DC609A, DC817A, DC754A, DC717A, DC730A, DC731A, DC718A, DC732A, DC733A, DC722A, DC715AR, DC715A, DC734A, DK561A, DC728A, DK560A, DK558A, DK559A