TN-10GSFP-LR4M-D47 TN-10GSFP-LR4M-D48 TN-10GSFP-LR4M-D49 TN-10GSFP-LR4M-D50 TN-10GSFP-LR4M-D51 TN-10GSFP-LR4M-D52 TN-10GSFP-LR4M-D53 TN-10GSFP-LR4M-D54 TN-10GSFP-LR4M-D55 TN-10GSFP-LR4M-D56