• Flex moduleDepending on your computer model, the following parts might be installed in the flex module:– 15-in-1 card reader– External Serial Advanced Technology Attachment (eSATA) connector– Four-digit diagnostic display– Institute of Electrical and Electronics Engineers (IEEE) 1394 connector– Slim optical drive– Thunderbolt adapter kit• Front-access storage enclosure• Multi-drive conversion kitDepending on your computer model, the following parts might be installed in the multi-drive conversionkit:– Internal storage drive (such as hard disk drive, solid-state drive, or hybrid drive)– Slim optical drive• Optical drive• Slim-optical-drive adapter3 Optional-storage-drive bays (2)You can install hard disk drives, solid-state drives, or hybrid drives in the storage drive bays.Note: If you want to install storage drives into the 3 optional-storage-drive bays, contact the LenovoCustomer Support Center for help.4 Storage drive bays (2)You can install hard disk drives, solid-state drives, or hybrid drives in the storage drive bays.5 M.2 solid-state drive slots (2)One or two M.2 solid-state drives are installed in some models.6 PCIe slots (5)You can install compatible PCIe cards and PCIe solid-state drives in the PCIe card slots.10 P720 User Guide
