humidity 5IIBM Support Line 56important notices 3installation order, memory modules 14installingadapters 18cover 25DIMMs 14hard disk drives 15integratedcontrollers 5functions 5intermittent problems 45LLEDcd drive activity 27Ethernet activity 28Ethernet link 28hard disk drive activity 27locator 27power-on 27system error 27LEDsfront 27rear 28locator LED 27Mmajor components 6memoryinstalling 14order of installation 14specifications 5memory moduleinstallation 14specifications 14memory problems 47microprocessorproblems 47type 5monitor problems 48mouse problems 46Nnoise emissions 5notes 3notes, important 58notices 57electronic emission 62FCC, Class A 62notices and statements 3Oonline documentation 1optional device problems 50optional-device connectors 9order of installation, memory modules 14Ppointing device problems 46POST error messages 36powerproblems 51requirement 5supply 5power-controlbutton 27button shield 27power-cord connector 28power-on LED 27problemsCD-ROM, DVD-ROM drive 43hard disk drive 44intermittent 45keyboard 45memory 47microprocessor 47monitor 48optional devices 50power 51serial port 52software 53solving 35USB port 54video 54product recycling and disposal 59Rrecycling and disposal, product 59reset button 27riser cardconnector location 9removing 20slots 9SSAShard disk drives, installing 17hot-swap drives 5hot-swap models 5SATAhot-swap 5hot-swap hard disk drives, installing 17simple-swap 5simple-swap hard disk drives, installing 16serial connector 28serial port problems 52serial-attached SCSISee SAS66 IBM System x3250 M2 Types 4190 and 4194: Installation Guide