80Product SpecificationsThe system specifications may differ depending on the derived models.For detailed system specifications, refer to the product catalogue.NP-R538/R588CPU (Optional) Intel Celeron/Pentium Dual Core/i3, i5, i7(Core) ProcessorMain Memory (Optional) Memory Type : DDR3 SODIMMMain Chipset Intel HM55Hard Disk Drive (Optional) 9.5mmH SATA HDDGraphics (Optional)Intel GMA HD (Internal)Nvidia GeForce GT 330M (External)Nvidia Geforce 310M (External)ATI Mobility Radeon™ HD545v/HD5145/HD5470 (External)Operating Environment Temperature : -5~40°C for storage, 10~32°C when operatingHumidity : 5~90% for storage, 20~80% when operatingOperating Voltage 100 - 240VACFrequency 50/60HzOutput Power (Optional) 60W/90W (Optional)Output Voltage (Optional) 19V 3.16A (60W) / 19V 4.74A (90W) (Optional) Optional components may not be provided or different components may be provideddepending on the computer model. The system specifications are subject to change without notice.