I do not think so.  This AIO is designed to support only one 2.5 sata hdd/ssd and one M.2 ssd.  If you need more capacity get a larger hdd. [IMAGE] One 2.5-inch hard-disk drive SATA AHCI 6 Gbps Up to 2 TB One M.2 2230 solid-state drive PCIe Gen3.0x4 NVMe, up to 32 Gbps Up to 1 TB  
Can a 2nd hard drive be installed in an Inspiron 7700 AIO ??
Hard Drive