United Kingdom

Thunderbolt v4 port laptops

 prices on 421 model  
Thunderbolt v4
clear
Show
Laptop Razer Blade 16 2023
  • display 16 ", 2560x1600 (16:10) / 3840x2400 (16:10)
  • CPU Intel, Core i9
  • GPU RTX 4060 - RTX 4090
  • RAM 16 / 32 GB
  • storage 1024 / 2048 GB
  • weight 2.45 kg
  • - / 100 %
Razer Blade 16 2023
display 16 ", 2560x1600 (16:10) / 3840x2400 (16:10), CPU Intel, Core i9, GPU RTX 4060 - RTX 4090, RAM 16 / 32 GB, storage 1024 / 2048 GB, weight 2.45 kg, - / 100 %
‎R..83RWH3-R3W1
Core i913950HX16 GBRTX 4060SSD M.2 NVMe1024 GB £1,999.97 .. £2,474.00 
RZ..83SWH3-R3W1
Core i913950HX16 GBRTX 4070SSD M.2 NVMe1024 GB £1,799.00 .. £2,603.00 
RZ..83SWJ3-R3W1
Core i913950HX32 GBRTX 4070SSD M.2 NVMe1024 GB £2,534.97 .. £3,025.00 
RZ..83SEJ3-R3U1
Core i913950HX32 GBRTX 4070SSD M.2 NVMe1024 GB £4,998.18
RZ..83TWH3-R3W1
Core i913950HX32 GBRTX 4080SSD M.2 NVMe1024 GB £2,699.99 .. £4,199.00 
RZ..83TWM3-R3W1
Core i913950HX32 GBRTX 4080SSD M.2 NVMe1024 GB £2,999.98 .. £3,546.00 
RZ..83TEM3-R3U1
Core i913950HX32 GBRTX 4080SSD M.2 NVMe1024 GB £5,030.60
RZ..83UWJ4-R3W1
Core i913950HX32 GBRTX 4090SSD M.2 NVMe2048 GB £3,394.97 .. £3,708.00 
Laptop HP EliteBook 1040 G10
  • display 14 ", 1920x1200 (16:10) / 2560x1600 (16:10)
  • CPU Intel, Core i7
  • GPU Iris Xe Graphics G7 96EUs
  • RAM 16 / 32 GB
  • storage 512 / 1024 GB
  • weight 1.19 kg
  • 100 %
HP EliteBook 1040 G10
display 14 ", 1920x1200 (16:10) / 2560x1600 (16:10), CPU Intel, Core i7, GPU Iris Xe Graphics G7 96EUs, RAM 16 / 32 GB, storage 512 / 1024 GB, weight 1.19 kg, 100 %
8A485EA
Core i71355U16 GBIris Xe Graphics G7 96EUsSSD M.2 NVMe512 GB £1,355.99 .. £1,763.00 
8A486EA
Core i71355U16 GBIris Xe Graphics G7 96EUsSSD M.2 NVMe1024 GB £1,439.99
81A02EA
Core i71355U16 GBIris Xe Graphics G7 96EUsSSD M.2 NVMe512 GB £1,527.53
81A01EA
Core i71355U16 GBIris Xe Graphics G7 96EUsSSD M.2 NVMe512 GB £1,626.92
8A487EA
Core i71355U32 GBIris Xe Graphics G7 96EUsSSD M.2 NVMe1024 GB £1,667.99 .. £2,035.00 
Laptop Microsoft Surface Laptop Studio 2
  • display 14.4 ", 2400x1600 (3:2)
  • CPU Intel, Core i7
  • GPU Iris Xe Graphics G7 96EUs - RTX 4060
  • RAM 8 - 64 GB
  • storage 512 - 2048 GB
  • weight 2 kg
  • 100 %
Microsoft Surface Laptop Studio 2
display 14.4 ", 2400x1600 (3:2), CPU Intel, Core i7, GPU Iris Xe Graphics G7 96EUs - RTX 4060, RAM 8 - 64 GB, storage 512 - 2048 GB, weight 2 kg, 100 %
ZRF-00004
Core i713700H16 GBIris Xe Graphics G7 96EUsSSD M.2 NVMe512 GB £1,839.48 .. £2,069.00 
YZY-00004
Core i713700H16 GBRTX 4050SSD M.2 NVMe512 GB £2,139.00 .. £2,149.00 
Z1T-00008
Core i713700H32 GBRTX 2000 AdaSSD M.2 NVMe1024 GB £3,303.82
Z1S-00004
Core i713700H32 GBRTX 2000 AdaSSD M.2 NVMe1024 GB £3,669.00 
Z1I-00004
Core i713700H32 GBRTX 4050SSD M.2 NVMe1024 GB £2,698.99 .. £2,699.00 
Z2D-00004
Core i713700H64 GBRTX 4060SSD M.2 NVMe1024 GB £3,369.00
Z2F-00009
Core i713800H8 GBRTX 4060SSD M.2 NVMe1024 GB £3,489.26
ZRG-00004
Core i713800H16 GBIris Xe Graphics G7 96EUsSSD M.2 NVMe512 GB £2,034.27 .. £2,149.00 
YZZ-00004
Core i713800H16 GBRTX 4050SSD M.2 NVMe512 GB £2,337.78 .. £2,951.00 
Z1T-00004
Core i713800H32 GBRTX 2000 AdaSSD M.2 NVMe1024 GB £3,466.19 .. £3,749.00 
Z1J-00004
Core i713800H32 GBRTX 4050SSD M.2 NVMe1024 GB £2,724.94 .. £2,949.00 
Z4H-00004
Core i713800H64 GBRTX 2000 AdaSSD M.2 NVMe2048 GB £4,246.86 .. £4,549.00 
Z2F-00004
Core i713800H64 GBRTX 4060SSD M.2 NVMe1024 GB £3,189.25 .. £3,449.00 
Z3H-00004
Core i713800H64 GBRTX 4060SSD M.2 NVMe2048 GB £3,552.53 .. £3,849.00 
Laptop Asus ROG Strix G16 (2023) G614JV
  • display 16 ", 1920x1200 (16:10)
  • CPU Intel, Core i5 / Core i7
  • GPU RTX 4060
  • RAM 16 GB
  • storage 512 - 2048 GB
  • weight 2.5 kg
  • 100 %
Asus ROG Strix G16 2023 G614JV
display 16 ", 1920x1200 (16:10), CPU Intel, Core i5 / Core i7, GPU RTX 4060, RAM 16 GB, storage 512 - 2048 GB, weight 2.5 kg, 100 %
N3106W
Core i513450HX16 GBRTX 4060SSD M.2 NVMe512 GB £1,188.00 .. £1,839.00 
N3153W
Core i713650HX16 GBRTX 4060SSD M.2 NVMe1024 GB £1,317.66 .. £1,837.00 
N3075W
Core i713650HX16 GBRTX 4060SSD M.2 NVMe2048 GB £1,374.57 .. £1,399.00 
Laptop HP Elite x360 1040 G10
  • display 14 ", 1920x1200 (16:10) / 2560x1600 (16:10)
  • CPU Intel, Core i7
  • GPU Iris Xe Graphics G7 96EUs
  • RAM 16 / 32 GB
  • storage 512 / 1024 GB
  • weight 1.33 kg
  • - / 100 %
HP Elite x360 1040 G10
display 14 ", 1920x1200 (16:10) / 2560x1600 (16:10), CPU Intel, Core i7, GPU Iris Xe Graphics G7 96EUs, RAM 16 / 32 GB, storage 512 / 1024 GB, weight 1.33 kg, - / 100 %
81A06EA
Core i71355U16 GBIris Xe Graphics G7 96EUsSSD M.2 NVMe512 GB £1,534.80 .. £1,946.00 
8A489EA
Core i71355U16 GBIris Xe Graphics G7 96EUsSSD M.2 NVMe1024 GB £1,619.99 .. £1,940.00 
8A488EA
Core i71355U16 GBIris Xe Graphics G7 96EUsSSD M.2 NVMe512 GB £1,739.99
96X33ET
Core i71355U16 GBIris Xe Graphics G7 96EUsSSD M.2 NVMe512 GB £1,823.14 .. £1,934.00 
81A04EA
Core i71355U16 GBIris Xe Graphics G7 96EUsSSD M.2 NVMe512 GB £1,825.70
8A490EA
Core i71355U32 GBIris Xe Graphics G7 96EUsSSD M.2 NVMe1024 GB £1,858.80 .. £2,240.00 
Laptop HP Elite x360 830 G10
  • display 13.3 ", 1920x1200 (16:10)
  • CPU Intel, Core i5 / Core i7
  • GPU Iris Xe Graphics G7 80EUs / Iris Xe Graphics G7 96EUs
  • RAM 16 / 32 GB
  • storage 512 / 1024 GB
  • weight 1.3 kg
  • - / 100 %
HP Elite x360 830 G10
display 13.3 ", 1920x1200 (16:10), CPU Intel, Core i5 / Core i7, GPU Iris Xe Graphics G7 80EUs / Iris Xe Graphics G7 96EUs, RAM 16 / 32 GB, storage 512 / 1024 GB, weight 1.3 kg, - / 100 %
96X78ET
Core i51335U16 GBIris Xe Graphics G7 80EUsSSD M.2 NVMe512 GB £1,213.31 .. £1,379.00 
6T2A2EA
Core i51335U16 GBIris Xe Graphics G7 80EUsSSD M.2 NVMe512 GB £1,269.55 .. £1,883.00 
8A474EA
Core i71355U16 GBIris Xe Graphics G7 96EUsSSD M.2 NVMe512 GB £1,439.99 .. £2,054.00 
6T2A3EA
Core i71355U16 GBIris Xe Graphics G7 96EUsSSD M.2 NVMe512 GB £1,898.75
818L6EA
Core i71355U32 GBIris Xe Graphics G7 96EUsSSD M.2 NVMe1024 GB £3,855.52
Laptop Lenovo Yoga Slim 7 Carbon 13IAP7
  • display 13.3 ", 2560x1600 (16:10)
  • CPU Intel, Core i7
  • GPU Iris Xe Graphics G7 96EUs
  • RAM 16 GB
  • storage 512 GB
  • weight 0.97 kg
  • 100 %
Lenovo Yoga Slim 7 Carbon 13IAP7
display 13.3 ", 2560x1600 (16:10), CPU Intel, Core i7, GPU Iris Xe Graphics G7 96EUs, RAM 16 GB, storage 512 GB, weight 0.97 kg, 100 %
82U9006EUK
Core i71260P16 GBIris Xe Graphics G7 96EUsSSD M.2 NVMe512 GB £749.97 .. £780.00 
Laptop Lenovo ThinkBook 13x ITG
  • display 13.3 ", 2560x1600 (16:10)
  • CPU Intel, Core i5
  • GPU Iris Xe Graphics G7 96EUs
  • RAM 16 GB
  • storage 512 GB
  • weight 1.13 kg
  • 100 %
Lenovo ThinkBook 13x ITG
display 13.3 ", 2560x1600 (16:10), CPU Intel, Core i5, GPU Iris Xe Graphics G7 96EUs, RAM 16 GB, storage 512 GB, weight 1.13 kg, 100 %
20WJ002MUK
Core i51130G716 GBIris Xe Graphics G7 96EUsSSD M.2 NVMe512 GB £1,219.01
Laptop Samsung Galaxy Book3 Pro 360
  • display 16 ", 2880x1800 (16:10)
  • CPU Intel, Core i5 / Core i7
  • GPU Iris Xe Graphics G7 80EUs / Iris Xe Graphics G7 96EUs
  • RAM 8 / 16 GB
  • storage 256 / 512 GB
  • weight 1.66 kg
  • 100 %
Samsung Galaxy Book3 Pro 360
display 16 ", 2880x1800 (16:10), CPU Intel, Core i5 / Core i7, GPU Iris Xe Graphics G7 80EUs / Iris Xe Graphics G7 96EUs, RAM 8 / 16 GB, storage 256 / 512 GB, weight 1.66 kg, 100 %
NP960QFG-KA1UK
Core i51340P8 GBIris Xe Graphics G7 80EUsSSD M.2 NVMe256 GB £899.99 .. £1,756.00 
NP964QFG-KA2UK
Core i71360P16 GBIris Xe Graphics G7 96EUsSSD M.2 NVMe512 GB £1,198.99 .. £1,554.00 
Laptop Lenovo ThinkBook 14s Yoga G3 IRU
  • display 14 ", 1920x1080 (16:9)
  • CPU Intel, Core i5 / Core i7
  • GPU Iris Xe Graphics G7 80EUs / Iris Xe Graphics G7 96EUs
  • RAM 8 / 16 GB
  • storage 256 / 512 GB
  • weight 1.5 kg
  • 100 %
Lenovo ThinkBook 14s Yoga G3 IRU
display 14 ", 1920x1080 (16:9), CPU Intel, Core i5 / Core i7, GPU Iris Xe Graphics G7 80EUs / Iris Xe Graphics G7 96EUs, RAM 8 / 16 GB, storage 256 / 512 GB, weight 1.5 kg, 100 %
21JG000JUK
Core i51335U8 GBIris Xe Graphics G7 80EUsSSD M.2 NVMe256 GB £986.81 .. £1,471.00 
21JG000FUK
Core i51335U16 GBIris Xe Graphics G7 80EUsSSD M.2 NVMe256 GB £799.99 .. £1,233.00 
21JG0008UK
Core i71355U16 GBIris Xe Graphics G7 96EUsSSD M.2 NVMe512 GB £969.98 .. £1,412.00 
Laptop Lenovo ThinkPad X13 2-in-1 Gen 5
  • display 13.3 ", 1920x1200 (16:10)
  • Core Ultra 5
  • GPU Graphics 4-Cores
  • RAM 16 GB
  • storage 512 GB
  • weight 1.3 kg
  • 100 %
Lenovo ThinkPad X13 2-in-1 Gen 5
display 13.3 ", 1920x1200 (16:10), Core Ultra 5, GPU Graphics 4-Cores, RAM 16 GB, storage 512 GB, weight 1.3 kg, 100 %
21LW0018PB new
Core Ultra 5125U16 GBGraphics 4-CoresSSD M.2 NVMe512 GB  out of stock
Laptop Acer Swift X SFX14-51G
  • display 14 ", 2240x1400 (16:10)
  • CPU Intel, Core i5
  • GPU RTX 3050
  • RAM 8 GB
  • storage 512 GB
  • weight 1.4 kg
  • 100 %
Acer Swift X SFX14-51G
from £723.62
display 14 ", 2240x1400 (16:10), CPU Intel, Core i5, GPU RTX 3050, RAM 8 GB, storage 512 GB, weight 1.4 kg, 100 %
SFX14-51G-581D
Core i51240P8 GBRTX 3050SSD M.2 NVMe512 GB £723.62
Laptop Lenovo ThinkPad X1 Yoga Gen8
  • display 14 ", 1920x1200 (16:10)
  • CPU Intel, Core i5 / Core i7
  • GPU Iris Xe Graphics G7 80EUs / Iris Xe Graphics G7 96EUs
  • RAM 16 / 32 GB
  • storage 256 / 512 GB
  • weight 1.4 kg
  • 100 %
Lenovo ThinkPad X1 Yoga Gen8
display 14 ", 1920x1200 (16:10), CPU Intel, Core i5 / Core i7, GPU Iris Xe Graphics G7 80EUs / Iris Xe Graphics G7 96EUs, RAM 16 / 32 GB, storage 256 / 512 GB, weight 1.4 kg, 100 %
21HQ003CUK
Core i51335U16 GBIris Xe Graphics G7 80EUsSSD M.2 NVMe256 GB £1,299.97 .. £2,175.00 
21HQ003JUK
Core i71355U16 GBIris Xe Graphics G7 96EUsSSD M.2 NVMe512 GB £1,800.00 .. £2,526.00 
21HQ0054UK
Core i71355U32 GBIris Xe Graphics G7 96EUsSSD M.2 NVMe512 GB £1,840.00 .. £2,070.00 
Laptop Asus ROG Flow Z13 (2022) GZ301ZE
  • display 13.4 ", 1920x1200 (16:10) / 3840x2400 (16:10)
  • CPU Intel, Core i9
  • GPU RTX 3050 Ti
  • RAM 16 GB
  • storage 1024 GB
  • weight 1.5 kg
  • - / 100 %
Asus ROG Flow Z13 2022 GZ301ZE
display 13.4 ", 1920x1200 (16:10) / 3840x2400 (16:10), CPU Intel, Core i9, GPU RTX 3050 Ti, RAM 16 GB, storage 1024 GB, weight 1.5 kg, - / 100 %
LC218W
Core i912900H16 GBRTX 3050 TiSSD M.2 NVMe1024 GB £1,491.37 .. £3,099.00 
LD220W
Core i912900H16 GBRTX 3050 TiSSD M.2 NVMe1024 GB £1,491.37 .. £1,894.00 
Laptop Samsung Galaxy Book4 Ultra
  • display 16 ", 2880x1800 (16:10)
  • CPU Intel, Core Ultra 9
  • GPU RTX 4070
  • RAM 32 GB
  • storage 1024 GB
  • weight 1.86 kg
  • 100 %
Samsung Galaxy Book4 Ultra
display 16 ", 2880x1800 (16:10), CPU Intel, Core Ultra 9, GPU RTX 4070, RAM 32 GB, storage 1024 GB, weight 1.86 kg, 100 %
NP960XGL-XG1UK new
Core Ultra 9185H32 GBRTX 4070SSD M.2 NVMe1024 GB £2,748.99 .. £2,749.00 
Laptop Lenovo ThinkPad P16v Gen 1 Intel
  • display 16 ", 1920x1200 (16:10)
  • CPU Intel, Core i7
  • GPU RTX 2000 Ada - RTX A500
  • RAM 16 / 32 GB
  • storage 512 / 1024 GB
  • weight 2.2 kg
  • - / 100 %
Lenovo ThinkPad P16v Gen 1 Intel
display 16 ", 1920x1200 (16:10), CPU Intel, Core i7, GPU RTX 2000 Ada - RTX A500, RAM 16 / 32 GB, storage 512 / 1024 GB, weight 2.2 kg, - / 100 %
21FC001BUK
Core i713700H16 GBRTX A1000SSD M.2 NVMe512 GB £1,234.13 .. £2,029.00 
21FC001EUK
Core i713700H16 GBRTX A500SSD M.2 NVMe512 GB £1,149.99 .. £1,782.00 
21FC001DUK
Core i713700H32 GBRTX A1000SSD M.2 NVMe1024 GB £1,393.56 .. £2,010.00 
21FC0012UK
Core i713800H32 GBRTX 2000 AdaSSD M.2 NVMe1024 GB £2,327.15 .. £2,479.00 
Laptop Asus Vivobook S 15 OLED S5504VN
  • display 15.6 ", 1920x1080 (16:9)
  • CPU Intel, Core i7
  • GPU A350M
  • RAM 16 GB
  • storage 1024 GB
  • weight 1.7 kg
  • 100 %
Asus Vivobook S 15 OLED S5504VN
display 15.6 ", 1920x1080 (16:9), CPU Intel, Core i7, GPU A350M, RAM 16 GB, storage 1024 GB, weight 1.7 kg, 100 %
L1061W
Core i713700H16 GBA350MSSD M.2 NVMe1024 GB £918.77 .. £1,429.00 
Laptop Gigabyte AORUS 17H BXF
  • display 17.3 ", 1920x1080 (16:9)
  • CPU Intel, Core i7
  • GPU RTX 4080
  • RAM 16 GB
  • storage 1024 GB
  • weight 2.7 kg
  • 100 %
Gigabyte AORUS 17H BXF
display 17.3 ", 1920x1080 (16:9), CPU Intel, Core i7, GPU RTX 4080, RAM 16 GB, storage 1024 GB, weight 2.7 kg, 100 %
74UK554SH
Core i713700H16 GBRTX 4080SSD M.2 NVMe1024 GB £1,699.99 .. £1,974.00 
74ES554SH
Core i713700H16 GBRTX 4080SSD M.2 NVMe1024 GB £1,971.49
Laptop Dell Inspiron 14 Plus 7440
  • display 14 ", 2240x1400 (16:10)
  • Core Ultra 7
  • GPU Arc 8-Cores
  • RAM 16 GB
  • storage 1024 GB
  • weight 1.77 kg
  • 100 %
Dell Inspiron 14 Plus 7440
display 14 ", 2240x1400 (16:10), Core Ultra 7, GPU Arc 8-Cores, RAM 16 GB, storage 1024 GB, weight 1.77 kg, 100 %
PO..H_2500_2204 new
Core Ultra 7155H16 GBArc 8-CoresSSD M.2 NVMe1024 GB  out of stock
Laptop Asus ExpertBook B9 B9400CEA
  • display 14 ", 1920x1080 (16:9)
  • CPU Intel, Core i7
  • GPU Iris Xe Graphics G7 96EUs
  • RAM 16 GB
  • storage 256 GB
  • weight 0.88 kg
  • 100 %
Asus ExpertBook B9 B9400CEA
from £647.46
display 14 ", 1920x1080 (16:9), CPU Intel, Core i7, GPU Iris Xe Graphics G7 96EUs, RAM 16 GB, storage 256 GB, weight 0.88 kg, 100 %
400CEA-KC0182X
Core i71165G716 GBIris Xe Graphics G7 96EUsSSD M.2 NVMe256 GB £647.46
Laptop HP EliteBook 840 G8
  • display 14 ", 1920x1080 (16:9)
  • CPU Intel, Core i5
  • GPU Iris Xe Graphics G7 80EUs
  • RAM 8 GB
  • storage 256 GB
  • weight 1.32 kg
  • - / 100 %
HP EliteBook 840 G8
display 14 ", 1920x1080 (16:9), CPU Intel, Core i5, GPU Iris Xe Graphics G7 80EUs, RAM 8 GB, storage 256 GB, weight 1.32 kg, - / 100 %
401F3EA
Core i51135G78 GBIris Xe Graphics G7 80EUsSSD M.2 NVMe256 GB £667.87 .. £667.00 
48R31EA
Core i51135G78 GBIris Xe Graphics G7 80EUsSSD M.2 NVMe256 GB £969.73 .. £1,325.00 
48R33EA
Core i51145G78 GBIris Xe Graphics G7 80EUsSSD M.2 NVMe256 GB £935.25 .. £977.00 
Laptop Lenovo Yoga Slim 7 Pro 14IAP7
  • display 14 ", 2240x1400 (16:10)
  • CPU Intel, Core i7
  • GPU Iris Xe Graphics G7 96EUs
  • RAM 8 GB
  • storage 512 GB
  • weight 1.32 kg
  • 100 %
Lenovo Yoga Slim 7 Pro 14IAP7
display 14 ", 2240x1400 (16:10), CPU Intel, Core i7, GPU Iris Xe Graphics G7 96EUs, RAM 8 GB, storage 512 GB, weight 1.32 kg, 100 %
82SV008AUK
Core i71260P8 GBIris Xe Graphics G7 96EUsSSD M.2 NVMe512 GB £681.79 .. £1,007.00 
Laptop Asus TUF Gaming F15 (2023) FX507VU
  • display 15.6 ", 1920x1080 (16:9)
  • CPU Intel, Core i7
  • GPU RTX 4050
  • RAM 16 GB
  • storage 512 GB
  • weight 2.2 kg
  • 100 %
Asus TUF Gaming F15 2023 FX507VU
display 15.6 ", 1920x1080 (16:9), CPU Intel, Core i7, GPU RTX 4050, RAM 16 GB, storage 512 GB, weight 2.2 kg, 100 %
LP150W
Core i713620H16 GBRTX 4050SSD M.2 NVMe512 GB £928.00 .. £999.00 
Laptop Gigabyte AORUS 16X ASG 2024
  • display 16 ", 2560x1600 (16:10)
  • CPU Intel, Core i9
  • GPU RTX 4070
  • RAM 32 GB
  • storage 2048 GB
  • weight 2.3 kg
  • 100 %
Gigabyte AORUS 16X ASG 2024
display 16 ", 2560x1600 (16:10), CPU Intel, Core i9, GPU RTX 4070, RAM 32 GB, storage 2048 GB, weight 2.3 kg, 100 %
63UKC65SH
Core i914900HX32 GBRTX 4070SSD M.2 NVMe2048 GB £2,082.36 .. £2,159.00 
24 more item(s)
1 2 3 4 5 ... 18
Filters
Price
from£ up to£ 
Brands
Device type
Features
Screen size
Screen resolution
Screen type
Screen surface
Refresh rate
Display features
CPU
CPU code name
CPU series
Processor cores
CPU frequency
RAM
Max. RAM
RAM type
RAM frequency
RAM slots
GPU
Dedicated GPU
Max. connected monitors
Drive
Drive size
Weight
Inputs & Outputs
USB A
USB type C
Network connection
Multimedia
Release year
more
Extra features & security
Aspect ratio
Brightness
Colour gamut
Keyboard backlight colour
Operating system
Material
Colour
Clear parameters