Your search for "mlx-1gcx24" revealed the following:
Extreme Brocade BR-MLX-1GCX24-X MLX Series 24x 1GB RJ45 Router Module
SKU: NSH-6996
Condition: Seller refurbished
Shipping: Overnight Options
Warranty: 365 days
NEW Extreme Brocade BR-MLX-1GCX24-X-ML MLX Series 24x 1GB RJ-45 Router Module
SKU: NSN-2933
Condition: New
Shipping: Overnight Options
Warranty: 365 days