Digisol DG-GS4652S Installation Manual page 13

Figure 1-20 The back panel with extended modules for DG-GS4628SP / DG-GS4652SP
Extended module's LED description is the following:
LED Status
Green
Link/Activity
Blink(Green)
Off
DG-GS4600S series switch supports the following XFP, SFP+ transceivers:
Table 1-6 DG-GS4600S series XFP, SFP+ transceivers description

XFP-SR transceiver
10GBase-SR XFP multi-mode fiber transceiver (850nm，62.5μm MMF 32m，
50μm 500MHz/km MMF 85m，50μm 2000MHz/km MMF 300m)

XFP XFP-LR transceiver
10GBase-LR XFP single-mode fiber transceiver (1310nm,SMF,10km)

XFP-ER transceiver
1550nm SMF, 40km

XFP-ER-70 transceiver
1550nm SMF, 70km
SFP+-LR transceiver

10GBase-LR SFP+(1310nm, SMF, 10km)
SFP+ SFP+-SR transceiver

10GBase-SR SFP+(850nm, 62.5μm MMF 32m, 50μm 500MHz/km MMF
85m, 50μm 2000MHz/km MMF 300m)
Table 1-5 10Gb extended module LED description
Description
Ports are at the link state of 10G
Ports are at the active state of 10G
No link or the link is failure
Spec
1-11
Introduction