Your search for "R3B00A" revealed the following:
HPE R3B00A M-Series SN3700M 32x 100GB QSFP28 Back-to-Front Airflow (DC) Switch
SKU: NSB-8929
Condition: Seller refurbished
Shipping: Overnight Options
Warranty: 365 days
$ 4,162.99
• Only 1 remaining
Call if you need more