The 673646-B21 writes 1.5 gigabytes per second and reads 1.5 gigabytes per second and includes the standard bracket only. HPE PCIe Workload Accelerators for HPE ProLiant ML/DL/SL Servers are PCIe card-based direct-attach solutions offering amazing performance with low latency and enterprise reliability. Technology: NAND Flash, Multi-Level cell. Storage Capacity: 1.2 Terabytes. Max Sequential Write Speed: 1.5Gb/s. Max Sequential Read Speed: 1.5Gb/s. Form Factor: Half Height/Half length-Low profile PCI Express x 8 slot. Bus Interface: PCI Express x 4. Power (Nominal): PCI Express x 4 (power spec 2.0). Average Access Latency: Reads 410 microseconds/Writes 35 Microseconds. Track Page Views With.