Lenovo ThinkPad Edge E330 (English) User Guide - Page 20
Status indicators
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1 SIM card slot If your computer has a wireless WAN feature, it might require a Subscriber Identification Module (SIM) card to establish wireless WAN connections. Depending on the country of delivery, the SIM card might be already installed in the SIM card slot. 2 PCI Express Mini Card slot for wireless WAN card or mSATA solid state drive Your computer might have a wireless wide area network (WAN) card installed in the PCI Express Mini Card slot for wireless WAN connections. For some models, an mSATA solid state drive might be installed instead of the wireless WAN card for data storage. 3 Battery Use your computer with the battery power whenever ac power is unavailable. You can use the Power Manager program to adjust your power settings as needed. For details, see the help information system of the Power Manager program. 4 PCI Express Mini Card slot for wireless LAN card Your computer might include a wireless local area network (LAN) card in the PCI Express Mini Card slot for you to establish wireless LAN connections. 5 Memory-upgrade slot You can increase the amount of memory in your computer by installing a memory module in the memory-upgrade slot. Memory modules are available as options from Lenovo. 6 Hard disk drive Your computer might have a large-capacity, customer-upgradable hard disk drive that can meet a variety of storage demands. Note: The hidden service partition is the reason why there is less free space than expected on your hard disk drive. Status indicators The status indicators show the current status of your computer. System status indicators The illuminated dot in the ThinkPad logo on the outer lid of your computer and on the palm rest works as a system status indicator. 6 User Guide