IBM System x3550 M4 24Regulatory complianceThe server conforms to the following standards:FCC - Verified to comply with Part 15 of the FCC Rules, Class AzCanada ICES-003, issue 4, Class AzUL/IEC 60950-1zCSA C22.2 No. 60950-1zNOM-019zArgentina IEC60950-1zJapan VCCI, Class AzAustralia/New Zealand AS/NZS CISPR 22, Class AzIEC 60950-1(CB Certificate and CB Test Report)zChina CCC (GB4943), GB9254 Class A, GB17625.1zTaiwan BSMI CNS13438, Class A; CNS14336-1zKorea KN22, Class A; KN24zRussia/GOST ME01, IEC-60950-1, GOST R 51318.22, GOST R 51318.24, GOST R 51317.3.2,zGOST R 51317.3.3IEC 60950-1 (CB Certificate and CB Test Report)zCE Mark (EN55022 Class A, EN60950-1, EN55024, EN61000-3-2, EN61000-3-3)zCISPR 22, Class AzTUV-GS (EN60950-1 /IEC60950-1,EK1-ITB2000)zExternal disk storage expansionCurrently, the x3550 M4 does not support external storage expansion units such as the EXP3000. It can,however, be attached to supported external storage systems such as the DS3500 series, using thesupported HBAs listed in Table 12.External disk storage systemsTable 17 lists the external storage systems that are supported by x3550 M4 and can be ordered throughSystem x sales channel. The server may support other IBM disk systems that are not listed in this table.Refer to IBM System Storage Interoperability Center for further information.Table 17. External disk storage systemsPart number Description1746A2D IBM System Storage DS3512 Express Dual Controller Storage System1746A2S IBM System Storage DS3512 Express Single Controller Storage System1746A4D IBM System Storage DS3524 Express Dual Controller Storage System1746A4S IBM System Storage DS3524 Express Single Controller Storage System181494H IBM System Storage DS3950 Model 94181498H IBM System Storage DS3950 Model 98181492H IBM System Storage EXP395 Expansion Unit1746A2E IBM System Storage EXP3512 Express Storage™ Expansion Unit1746A4E IBM System Storage EXP3524 Express Storage Expansion Unit