B-Series – Data Sheet
6
Switch Model Specifications
B5G124-24
B5G124-24P2
B5G124-48
B5G124-48P2
Altitude
Operating
10,000 ft (3,048 m)
10,000 ft (3,048 m)
10,000 ft (3,048 m)
10,000 ft (3,048 m)
Non-operating
15,000 ft (4,572 m)
15,000 ft (4,572 m)
15,000 ft (4,572 m)
15,000 ft (4,572 m)
Acoustics
Front of switch
(normal operation)
44.5 dB
45 dB
45.5 dB
44.5 dB
Agency and Regulatory Standard Specifications
Safety
UL 60950-1, CSA 22.1
60950, EN 60950-1, and
IEC 60950-1
UL 60950-1, CSA 22.1 60950,
EN 60950-1, and IEC 60950-1
UL 60950-1, CSA 22.1 60950,
EN 60950-1, and IEC 60950-1
UL 60950-1, CSA 22.1
60950, EN 60950-1, and IEC
60950-1
EMC
FCC Part 15 (Class A),
ICES-003 (Class A), BSMI,
VCCI V-3, AS/NZS CISPR 22
(Class A), EN 55022 (Class
A), EN 55024, EN 61000-3-
2, and EN 61000-3-3
FCC Part 15 (Class A), ICES-
003 (Class A), BSMI, VCCI
V-3, AS/NZS CISPR 22 (Class
A), EN 55022 (Class A), EN
55024, EN 61000-3-2, and EN
61000-3-3
FCC Part 15 (Class A), ICES-
003 (Class A), BSMI, VCCI
V-3, AS/NZS CISPR 22 (Class
A), EN 55022 (Class A), EN
55024, EN 61000-3-2, and EN
61000-3-3
FCC Part 15 (Class A),
ICES-003 (Class A), BSMI,
VCCI V-3, AS/NZS CISPR 22
(Class A), EN 55022 (Class
A), EN 55024, EN 61000-3-
2, and EN 61000-3-3
Environmental
2002/95/EC (RoHS
Directive), 2002/96/EC
(WEEE Directive), Ministry
of Information Order #39
(China RoHS)
2002/95/EC (RoHS
Directive), 2002/96/EC
(WEEE Directive), Ministry of
Information Order #39 (China
RoHS)
2002/95/EC (RoHS
Directive), 2002/96/EC
(WEEE Directive), Ministry of
Information Order #39 (China
RoHS)
2002/95/EC (RoHS
Directive), 2002/96/EC
(WEEE Directive), Ministry
of Information Order #39
(China RoHS)
B5K125-24
B5K125-24P2
B5K125-48
B5K125-48P2
Performance
Throughput Capacity
wire-speed Mpps
(switch / stack)
65.5 Mpps / 523.8 Mpps
65.5 Mpps / 523.8 Mpps
101.2 Mpps / 809.5 Mpps
101.2 Mpps / 809.5 Mpps
Switching Capacity
(switch / stack)
88 Gbps (65.5 Mpps)/
704 Gbps (523.8 Mpps)
88 Gbps (65.5 Mpps)/
704 Gbps (523.8 Mpps)
136 Gbps (101.2 Mpps)/ 1,088
Gbps (809.5 Mpps)
136 Gbps (101.2 Mpps)/
1,088 Gbps (809.5 Mpps)
Stacking Capacity
(switch / stack)
48 Gbps (35.7 Mpps)/
384 Gbps (285.7 Mpps)
48 Gbps (35.7 Mpps)/
384 Gbps (285.7 Mpps)
48 Gbps (35.7 Mpps)/
384 Gbps (285.7 Mpps)
48 Gbps (35.7 Mpps)/
384 Gbps (285.7 Mpps)
Aggregate Throughput
Capacity
(switch / stack)
136 Gbps (101.2 Mpps)/
1,088 Gbps (809.5 Mpps)
136 Gbps (101.2 Mpps)/ 1,088
Gbps (809.5 Mpps)
184 Gbps (136.9 Mpps)/ 1,472
Gbps (1,095.2 Mpps)
184 Gbps (136.9 Mpps)/
1,472 Gbps (1,095.2 Mpps)
PoE Specifications
802.3af Interoperable
N/A
Yes
N/A
Yes
802.3at Interoperable
N/A
Yes
N/A
Yes
System Power
N/A
375 watts per switch with up
to 30 watts per port
Per-port switch power
monitor:
• Enable/disable
• Priority safety
• Overload & short circuit
protection
N/A
375 watts per switch with
up to 30 watts per port
Per-port switch power
monitor:
• Enable/disable
• Priority safety
• Overload & short circuit
protection
Physical Specifications
Dimensions (H x W x D)
H: 4.4 cm (1.73”)
W: 44.1 cm (17.36”)
D: 36.85 cm (14.51”)
H: 4.4 cm (1.73”)
W: 44.1 cm (17.36”)
D: 36.85 cm (14.51”)
H: 4.4 cm (1.73”)
W: 44.1 cm (17.36”)
D: 36.85 cm (14.51”)
H: 4.4 cm (1.73”)
W: 44.1 cm (17.36”)
D: 36.85 cm (14.51”)
Net Weight
4.92 kg (10.85 lb)
6.10 kg (13.45 lb)
5.31 kg (11.70 lb)
6.49 kg (14.30 lb)
MTBF
374,029 hours
328,905 hours
297,808 hours
252,940 hours
Physical Ports
• (24) 10/100/1000 auto-
sensing, auto-negotiating
MDI/MDI-X RJ45 ports
• (2) Combo SFP ports
• (2) 10GE ports
• (2) dedicated stacking
ports
• (1) DB9 console port
• (1) RPS connector
• (24)10/100/1000 PoE (.af
+ .at) auto-sensing, auto-
negotiating MDI/MDI-X RJ45
ports
• (2) Combo SFP ports
• (2) 10GE ports
• (2) dedicated stacking ports
• (1) DB9 console port
• (1) RPS connector
• (48) 10/100/1000 auto-
sensing, auto-negotiating
MDI/MDI-X RJ45 ports
• (2) Combo SFP ports
• (2) 10GE ports
• (2) dedicated stacking
ports
• (1) DB9 console port
• (1) RPS connector
• (48)10/100/1000 PoE
(.af + .at) auto-sensing,
auto-negotiating MDI/
MDI-X RJ45 ports
• (2) Combo SFP ports
• (2) 10GE ports
• (2) dedicated stacking
ports
• (1) DB9 console port
• (1) RPS connector
