36 CE0128TB/CE0128PB/CE0152TB/CE0152PB Installation GuideImportant NotesProcessor speed indicates the internal clock speed of the microprocessor; otherfactors also affect application performance.CD or DVD drive speed is the variable read rate. Actual speeds vary and are oftenless than the possible maximum.When referring to processor storage, real and virtual storage, or channel volume,KB stands for 1,024 bytes, MB stands for 1,048,576 bytes and GB stands for1,073,741,824 bytes.When referring to hard disk drive capacity or communications volume, MB standsfor 1,000,000 bytes and GB stands for 1,000,000,000 bytes. Total user-accessiblecapacity can vary depending on operating environments.Maximum internal hard disk drive capacities assume the replacement of anystandard hard disk drives and population of all hard-disk-drive bays with thelargest currently supported drives that are available from Lenovo.Maximum memory might require replacement of the standard memory with anoptional memory module.Each solid-state memory cell has an intrinsic, finite number of write cycles that thecell can incur. Therefore, a solid-state device has a maximum number of write cyclesthat it can be subjected to, expressed as total bytes written (TBW). A device that hasexceeded this limit might fail to respond to system-generated commands or mightbe incapable of being written to. Lenovo is not responsible for replacement of adevice that has exceeded its maximum guaranteed number of program/erase cycles,as documented in the Official Published Specifications for the device.Lenovo makes no representations or warranties with respect to non-Lenovoproducts. Support (if any) for the non-Lenovo products is provided by the thirdparty, not Lenovo.Some software might differ from its retail version (if available) and might notinclude user manuals or all program functionality.