Your search for "r4g55a" revealed the following:

HPE R4G55A SN3600B Series 24x 32GB FC SFP+ (8x Active) SAN Switch

SKU: NSB-6592
Condition: Seller refurbished
Shipping: Overnight Options
Warranty: 365 days

$ 6,749.99

$ 8,049.99

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NEW HPE R4G55A SN3600B Series 24x 32GB FC SFP+ (8x Active) SAN Switch

SKU: NSN-9175
Condition: New
Shipping: Overnight Options
Warranty: 365 days